Tool Length And Plane Change - Siemens SINUMERIK 840DE Programming Manual

Tool offsets
8.17 Special handling of tool offsets
8.17.4

Tool length and plane change

Function
With the set setting data SD 42940 TOOL_LENGTH_CONST not equal to zero, you can
assign tool length components such as length, wear and base dimension to the geometry
axes for turning and grinding tools at a plane change.
Parameters
SD 42940 TOOL_LENGTH_CONST
Setting data not equal to zero:
The assignment between the tool length components (length, wear and tool base dimension)
and the geometry axes is not modified when the machining plane is changed (G17-19).
The following table shows the assignment between the tool length components and the
geometry axes for turning and grinding tools (tool types 400 to 599):
Table of Contents
17
*)
19
-17
-18
-19
Each value not equal to 0 which is not equal to one of the six listed values is evaluated as
*)
value 18.
The following table shows the assignment between the tool length components and the
geometry axes for all other tools (tool types < 400 or > 599):
Machining plane
*)
18
19
-17
-18
-19
Each value not equal to 0 which is not equal to one of the six listed values is evaluated as
*)
value 17.
Further information
The representation in the tables assumes that the geometry axes
to 3 are labeled X, Y, Z. The axis order and not the axis identifier determines the assignment
between an offset and an axis.
8-78
Length 1
Y
X
Z
X
Z
Y
Length 1
Z
Y
X
Z
Y
X
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Length 2
X
Z
Y
Y
X
Z
Length 2
Y
X
Z
X
Z
Y
Length 3
Z
Y
X
Z
Y
X
Length 3
X
Z
Y
Y
X
Z
Fundamentals